Dot Product (Simulink Reference)

Generate the dot product

Library

Math Operations

Description

The Dot Product block generates the dot product of its two input vectors. The scalar output, y, is equal to the MATLAB operation

```
y = sum(conj(u1) .* u2 )
```

where u1 and u2 represent the vector inputs. If both inputs are vectors, they must be the same length. The elements of the input vectors can be real- or complex-valued signals of data type double. The signal type (complex or real) of the output depends on the signal types of the inputs.

Input 1
Input 2
Output

real
real
real

real
complex
complex

complex
real
complex

complex
complex
complex

Input 1	Input 2	Output
real	real	real
real	complex	complex
complex	real	complex
complex	complex	complex

To perform element-by-element multiplication without summing, use the Product block.

Data Type Support

A Dot Product block accepts and outputs signals of type double.

Dialog Box

Characteristics

Direct Feedthrough
Yes

Sample Time
Inherited from driving block

Scalar Expansion
No

States
0

Dimensionalized
Yes

Zero Crossing
No

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	No
States	0
Dimensionalized	Yes
Zero Crossing	No

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